
Ubuntu 21.10。
我正在構建內核,如下所示https://help.ubuntu.com/community/Kernel/Compile和https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel。
DEB_BUILD_OPTIONS=parallel=$(getconf _NPROCESSORS_ONLN) AUTOBUILD=1 NOEXTRAS=1 \
fakeroot debian/rules binary-arch
此編譯命令具有相同的結果:
make --jobs=$(getconf _NPROCESSORS_ONLN) bindeb-pkg \
LOCALVERSION=-custom-$(git describe | tr '[:upper:]' '[:lower:]')
這會創建一些.deb
包:
$ ls -hal ../*.deb
-rw-r--r-- 1 amedee amedee 8,2M feb 26 02:17 ../linux-headers-5.13.19-ubuntu-5.13.0-22.22_5.13.19-ubuntu-5.13.0-22.22-6_amd64.deb
-rw-r--r-- 1 amedee amedee 70M feb 26 02:18 ../linux-image-5.13.19-ubuntu-5.13.0-22.22_5.13.19-ubuntu-5.13.0-22.22-6_amd64.deb
-rw-r--r-- 1 amedee amedee 1,2M feb 26 02:17 ../linux-libc-dev_5.13.19-ubuntu-5.13.0-22.22-6_amd64.deb
我這樣安裝它們:
sudo dpkg --install \
../linux-headers-5.13.19-ubuntu-5.13.0-22.22_5.13.19-ubuntu-5.13.0-22.22-6_amd64.deb \
../linux-image-5.13.19-ubuntu-5.13.0-22.22_5.13.19-ubuntu-5.13.0-22.22-6_amd64.deb
這就是以下內容/boot
:
$ ls -hal /boot/*5.13*
-rw-r--r-- 1 root root 252K nov 5 10:21 /boot/config-5.13.0-22-generic
-rw-r--r-- 1 root root 251K feb 26 02:15 /boot/config-5.13.19-ubuntu-5.13.0-22.22
-rw-r--r-- 1 root root 40M feb 22 16:21 /boot/initrd.img-5.13.0-22-generic
-rw-r--r-- 1 root root 37M feb 26 02:20 /boot/initrd.img-5.13.19-ubuntu-5.13.0-22.22
-rw------- 1 root root 5,7M nov 5 10:21 /boot/System.map-5.13.0-22-generic
-rw-r--r-- 1 root root 5,6M feb 26 02:15 /boot/System.map-5.13.19-ubuntu-5.13.0-22.22
-rw------- 1 root root 9,8M nov 5 13:51 /boot/vmlinuz-5.13.0-22-generic
-rw-r--r-- 1 root root 8,5M feb 26 02:15 /boot/vmlinuz-5.13.19-ubuntu-5.13.0-22.22
更新 initramfs (嚴格來說這不是必需的,因為這已經完成了,但為了更好的措施):
$ sudo update-initramfs -u -k all
update-initramfs: Generating /boot/initrd.img-5.13.19-ubuntu-5.13.0-22.22
update-initramfs: Generating /boot/initrd.img-5.13.0-22-generic
然後我跑update-grub
:
amedee@kerbol:~/repos/ubuntu-impish$ sudo update-grub
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.13.0-22-generic
Found initrd image: /boot/initrd.img-5.13.0-22-generic
Found linux image: /boot/vmlinuz-5.13.0-22-generic
Found initrd image: /boot/initrd.img-5.13.0-22-generic
Adding boot menu entry for UEFI Firmware Settings
done
我編譯的核心5.13.19-ubuntu-5.13.0-22.22
沒有被加入到Grub選單中update-grub
。我知道我可以手動添加它,但這有拼寫錯誤的風險。我還需要編譯很多內核,因為我試著使用git bisect
.我正在解決的核心問題不會出現在更新的主線核心中,只會出現在(部分但不是全部)Ubuntu 21.10 核心中,因此我這樣做只是為了學習一些東西並滿足我的好奇心。
我需要做什麼才能update-grub
將我編譯的核心從/boot
目錄新增到 Grub 選單?
答案1
根據 中的文本,以下三個命令透過關閉可執行位 on09_lowlatency
並開啟 的位元來解決此問題。10_linux
/etc/grub.d/README.lowlatency
# chmod -x /etc/grub.d/09_lowlatency
# chmod +x /etc/grub.d/10_linux
# update-grub
解決方案位於https://askubuntu.com/a/1228269/149519。
要確認它現在按預期工作:
$ ls -hal /boot ; echo ; sudo update-grub
total 107M
drwxr-xr-x 4 root root 4,0K feb 28 04:42 .
drwxr-xr-x 20 root root 4,0K feb 26 01:13 ..
-rw-r--r-- 1 root root 252K nov 5 10:21 config-5.13.0-22-generic
-rw-r--r-- 1 root root 251K feb 26 02:15 config-5.13.19-ubuntu-5.13.0-22.22
drwx------ 4 root root 4,0K jan 1 1970 efi
drwxr-xr-x 5 root root 4,0K feb 28 04:42 grub
lrwxrwxrwx 1 root root 28 feb 28 04:26 initrd.img -> initrd.img-5.13.0-22-generic
-rw-r--r-- 1 root root 40M feb 26 13:55 initrd.img-5.13.0-22-generic
-rw-r--r-- 1 root root 37M feb 26 13:54 initrd.img-5.13.19-ubuntu-5.13.0-22.22
-rw------- 1 root root 5,7M nov 5 10:21 System.map-5.13.0-22-generic
-rw-r--r-- 1 root root 5,6M feb 26 02:15 System.map-5.13.19-ubuntu-5.13.0-22.22
lrwxrwxrwx 1 root root 25 feb 28 04:27 vmlinuz -> vmlinuz-5.13.0-22-generic
-rw------- 1 root root 9,8M nov 5 13:51 vmlinuz-5.13.0-22-generic
-rw-r--r-- 1 root root 8,5M feb 26 02:15 vmlinuz-5.13.19-ubuntu-5.13.0-22.22
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.13.19-ubuntu-5.13.0-22.22
Found initrd image: /boot/initrd.img-5.13.19-ubuntu-5.13.0-22.22
Found linux image: /boot/vmlinuz-5.13.0-22-generic
Found initrd image: /boot/initrd.img-5.13.0-22-generic
Adding boot menu entry for UEFI Firmware Settings
done